SN74ALS00AD NAND Gate IC Equivalent & Substitute Parts

Part Overview

The SN74ALS00AD is a 4-channel 2-input NAND gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This component is classified as Last Time Buy, indicating discontinued production with limited availability. The SN74ALS00AD remains functionally equivalent to active production alternatives within the 74ALS series, making substitute identification critical for ongoing design support and procurement planning.

Substiute Parts

SN74ALS00AD

Texas InstrumentsIn Stock: 1565SN74ALS00AD Datasheet

Current PartRFQ

SN74ALS00ADR

Texas InstrumentsIn Stock: 3673SN74ALS00ADR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74ALS00AD is determined by strict equivalence across the following parameters:

• Logic function: 4-channel 2-input NAND gate
• Electrical specifications: 4.5V ~ 5.5V supply voltage, 400µA/8mA output current, 11ns propagation delay at 5V with 50pF load
• Input logic thresholds: 0.8V low, 2V high
• Operating temperature range: 0°C ~ 70°C
• Package type: 14-SOIC surface mount
• Compliance: ROHS3, MSL Level 1

The SN74ALS00ADR qualifies as a direct substitute based on identical electrical and functional parameters. The distinction between these parts is packaging format only: tube versus tape & reel.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS00ADR is the recommended substitute for the SN74ALS00AD. Both parts are manufactured by Texas Instruments with identical electrical characteristics, logic function, and package specifications. The primary distinction is product status: the SN74ALS00AD is Last Time Buy with limited inventory (1467 pcs), while the SN74ALS00ADR maintains Active status with higher availability (3633 pcs).

For new designs or ongoing production requiring long-term component supply, the SN74ALS00ADR in tape & reel packaging is the appropriate selection. Both parts meet ROHS3 compliance and MSL Level 1 requirements. No electrical or functional redesign is required when transitioning between these parts.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS00ADR directly replace the SN74ALS00AD in existing designs?

A: Yes. The SN74ALS00ADR is electrically and functionally identical to the SN74ALS00AD. Both parts operate at 4.5V ~ 5.5V supply voltage, deliver identical output current specifications (400µA, 8mA), and maintain the same 11ns propagation delay. The 14-SOIC package dimensions are identical. No circuit modifications are required.

Q: What is the difference between tube and tape & reel packaging?

A: Tube packaging (SN74ALS00AD) is used for lower-volume orders and manual handling. Tape & reel packaging (SN74ALS00ADR) is designed for automated assembly equipment and higher-volume production. Both formats contain the same component with identical electrical specifications. Selection depends on manufacturing process requirements and order quantity.

Q: Why is the SN74ALS00AD marked as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments has discontinued production of this part number. Existing inventory is available for a limited time. The SN74ALS00ADR remains in active production as the recommended alternative for future procurement.

Q: Are there any compliance differences between these parts?

A: No. Both the SN74ALS00AD and SN74ALS00ADR are ROHS3 compliant, REACH unaffected, and classified as MSL Level 1 (Unlimited moisture sensitivity). Compliance certifications are identical.

Q: What is the operating temperature range for these parts?

A: Both parts operate across 0°C ~ 70°C. This range applies to all electrical specifications including propagation delay and logic thresholds.